Travis22

Hello everyone. I just traded my kx 125 for a 91 banshee. the motor threw a rod and smashed the cases. long story short 90% of the rebuild parts are on their way. im going to have to get the cylinders bored out to .020 over stock. will i have to change my jetting? i havent looked to see what it has for jets right now, or how it will even run. It has a K&N filter with the adaptor on the air box, toomey t5 exhaust. I live in a lower part of Vermont below 3000 feet. Thank you for any replies